|
Central Minnesota | That’s actually not true. There’s an old saying about Canadian thistles.
Cut in May, back in a day.
Cut in June, be back soon.
Cut in July, then they die.
The key is to cut them high when they are close to full bloom. It greatly stresses the plant as they have put all their energy into building their seed head. After cutting, they have to support the entire plant and build a new seed head which will deplete their energy reserves. Depleting their energy reserves causes their root system to shrink. If it’s dry the shrinking of their root system will enable oxygen to enter their root system through channels which will kill anaerobic bacteria thistle needs to live, thus killing the thistle. It’s very difficult to do but you can get lucky and kill thistle occasionally. We lost a lot of knowledge from the old time farmers when everyone adopted chemicals. | |
|